Preprint Article Version 1 This version is not peer-reviewed

Surface Functionalization of Silica and Zirconia Sol-Gel Materials with Europium Complexes

Version 1 : Received: 15 November 2018 / Approved: 16 November 2018 / Online: 16 November 2018 (11:11:07 CET)

How to cite: Danchova, N..; Gutzov, S. Surface Functionalization of Silica and Zirconia Sol-Gel Materials with Europium Complexes. Preprints 2018, 2018110404 (doi: 10.20944/preprints201811.0404.v1). Danchova, N..; Gutzov, S. Surface Functionalization of Silica and Zirconia Sol-Gel Materials with Europium Complexes. Preprints 2018, 2018110404 (doi: 10.20944/preprints201811.0404.v1).

Abstract

The present contribution is focused on the relation preparation – structure – optical properties of hybrid silica and zirconia powders containing Eu(III) complexes: [Eu(ntac)3][pphendcn] and [Eu(phen)2](NO3)3. Methods for functionalization of silica and zirconia microparticles, based on adsorption of 1,10-phenantroline and [Eu(ntac)3][pphendcn], and doping with [Eu(phen)2](NO3)3 nanoparticles  are proposed to obtain of red emitting hybrid composites with quantum efficiency 20 – 50 %. The optical properties of rare earth ions incorporated in silica and zirconia composites are used to explore the site symmetry (D2, C2v or lower) of the Eu3+ optical centers in the hybrid composites.  Quantum yields of the investigated sol-gel micropowders and quantification of their optical spectra are presented.

Subject Areas

silica, europium complexes, luminescence, sol-gel, zirconia

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